Drainage gas recovery device for natural gas extraction

Abstract

The invention discloses a water drainage and gas recovery device for natural gas extraction, and relates to the technical field of water drainage and gas recovery. The drainage gas recovery device for natural gas extraction comprises a drainage pipe and a drainage pipe, a supercharger is fixedly connected to the upper portion of the box body, an air inlet pipeline is fixedly connected to the lower portion of the supercharger, a drainage pipeline is fixedly connected to the right portion of the box body, a partition plate is fixedly connected to the interior of the box body, a drainage bin is formed below the partition plate, a first hydraulic rod is fixedly connected to the lower portion of a sliding plate, and a second hydraulic rod is fixedly connected to the lower portion of the sliding plate. A first hydraulic pipe is connected to the upper portion of the first hydraulic rod, a second hydraulic rod is fixedly connected to the inner wall of the pressurizing bin, the first hydraulic pipe is connected to the second hydraulic rod, and a first sliding groove is formed in the side of the first hydraulic rod. According to the drainage and gas production device for natural gas extraction, transportation and self-cleaning of natural gas are achieved through the filtering and exhausting assembly, the knocking assembly and the cleaning assembly, and the filtering effect of the natural gas is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of drainage gas extraction technology, specifically to a drainage gas extraction device for natural gas extraction. Background Technology

[0002] The process of bringing natural gas to the surface. Natural gas flows from the bottom of the well to the wellhead through a self-flowing pipeline under its own pressure. During the development of a gas field, effective technological measures are taken to extract more natural gas and ensure its safe and stable storage and transportation to meet the needs of gas production. Like crude oil, natural gas is buried in underground, closed geological structures. Some are stored in the same strata as crude oil, while others exist separately. Natural gas stored in the same strata as crude oil is extracted along with the crude oil. For natural gas reservoirs containing only single-phase gas, we call them gas reservoirs. Their extraction methods are very similar to those for crude oil extraction, but also have their own unique features. Research is being conducted on drainage gas extraction techniques to remove accumulated liquid from gas wells and improve extraction efficiency. Domestically, a series of supporting technologies for gas extraction have been developed, reaching the advanced international level. These technologies mainly include reservoir protection, drainage gas extraction, hydrate control, natural gas wellhead and gathering pipeline safety protection, gas field corrosion prevention, stratified extraction, and reservoir enhancement and production stimulation.

[0003] Chinese Patent CN108060912A, published on May 22, 2018, discloses a drainage and gas extraction device for natural gas extraction, including a natural gas well layer, a natural gas well, a hydraulic cylinder, a support column, and a gantry frame. The natural gas well is embedded inside the natural gas well layer. The hydraulic cylinder is located inside the support column and above the natural gas well. The gantry frame is located above the natural gas well via the support column. The natural gas well has a natural gas layer, a pressure cap, a delivery pipe, and an automatic pressurization and drainage mechanism. The delivery pipe passes through the middle of the pressure cap and is connected to the automatic pressurization and drainage mechanism via the gantry frame. The natural gas layer is located inside the bottom of the natural gas well, and the pressure cap is located inside the natural gas well.

[0004] The aforementioned document describes a natural gas well equipped with a natural gas layer, a cap, a delivery pipe, and an automatic pressurization and drainage mechanism. After gas extraction, the freshly extracted natural gas can undergo automatic dehydration and drainage treatment to improve its purity and prevent water vapor from damaging the pipeline. Moreover, this dehydration and drainage method effectively prevents natural gas leakage and is more stable and safe. However, there are still some impurities in the natural gas after the water is drained, as well as issues related to natural gas transportation. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a drainage gas extraction device for natural gas extraction, solving the problems mentioned in the background section. To achieve the above objectives, this invention is implemented through the following technical solution: a drainage gas extraction device for natural gas extraction, comprising; The box has a booster fixedly connected to the top, an air intake pipe fixedly connected to the bottom of the booster, a drain pipe fixedly connected to the right side of the box, a partition plate fixedly connected inside the box, and a drain compartment opened below the partition plate.

[0006] A hydraulic rod is fixedly connected to the bottom of the slide plate, and a hydraulic pipe is connected to the top of the hydraulic rod. A hydraulic rod is fixedly connected to the inner wall of the pressurization chamber. The hydraulic pipe is connected to the hydraulic rod. A sliding groove is provided on the side of the hydraulic rod. A baffle is slidably connected inside the sliding groove. A connecting rod is fixedly connected to the side of the baffle. A straight pipe is fixedly connected to the left side of the box. A cross-shaped fixing bracket is fixedly connected inside the straight pipe. A rotating connector is fixedly connected to the inner side of the cross-shaped fixing bracket. A rotating shaft is rotatably connected to the inner side of the rotating connector. A spiral blade is fixedly connected to the outer side of the rotating shaft. A filter screen hole is provided above the spiral blade. Preferably, the box body has a pressurization chamber inside, a float plate assembly is fixedly connected inside the pressurization chamber, a valve control assembly is provided inside the box body, a gate is slidably connected inside the drainage chamber, a lifting compression plate is fixedly connected below the drainage chamber, and a sliding plate is fixedly connected inside the box body.

[0007] Preferably, the spiral blade has multiple filter holes, which are circular in shape and of the same size, and the spiral blade can rotate on the rotating connector.

[0008] Preferably, a hydraulic rod three is fixedly connected to the top of the straight pipe, a hydraulic pipe two is located above the straight pipe, and the hydraulic pipe two is connected to the hydraulic rod three. A fixing plate is fixedly connected to the top of the straight pipe, a sliding groove two is provided above the fixing plate, a sliding rack is slidably connected inside the sliding groove two, a limiter is fixedly connected to the top of the straight pipe, a spring is fixedly connected below the limiter, a rotary accumulator is fixedly connected below the spring, a gear is fixedly connected to the left side of the rotary accumulator, and a hammer is fixedly connected to the bottom of the rotary accumulator.

[0009] Preferably, the second hydraulic pipe branches off from the first hydraulic pipe, the sliding rack is fixedly connected to the third hydraulic rod, the sliding rack has three intervals in the middle and the rest are normal continuous racks, and the sliding rack meshes with a gear.

[0010] Preferably, the angle of the limiter is 170 degrees, the angle of the rotary accumulator is 100 degrees, and the gear is fixedly connected to the top of the rotary accumulator, which can control the angle change of the rotary accumulator.

[0011] Preferably, a T-shaped tee pipe is fixedly connected to the front of the straight pipe, and an exhaust fan is fixedly connected to the connection between the T-shaped tee pipe and the straight pipe. Above the exhaust fan is a switch slot, and inside the switch slot is an exhaust fan switch that is slidably connected. Behind the exhaust fan switch is a hydraulic rod four, and behind the hydraulic rod four is a hydraulic pipe three that is fixedly connected.

[0012] Preferably, the T-shaped tee pipe is internally equipped with an explosion-proof tee ball valve, an explosion-proof tee ball valve switch is fixedly connected above the explosion-proof tee ball valve, a hydraulic rod five is fixedly connected above the explosion-proof tee ball valve switch, and a hydraulic pipe four is fixedly connected behind the hydraulic rod five.

[0013] This invention provides a drainage gas extraction device for natural gas extraction. It has the following beneficial effects: (1) This drainage gas extraction device for natural gas extraction can control the entry and exit of natural gas by moving the baffle through the hydraulic rod. The spiral blades and filter screen inside the straight pipe allow the natural gas to pass through and drive the spiral blades to rotate, which can fully filter the solid impurities remaining in the natural gas, ensuring continuous operation during the natural gas drainage gas extraction process and increasing the speed of natural gas transportation.

[0014] (2) This drainage gas extraction device for natural gas extraction uses a hydraulic rod three to drive the sliding rack to drive the gear, which in turn compresses the spring above the rotating accumulator to store energy. When the sliding rack engages with the partition, the sliding rack no longer restricts the gear, causing the rotating accumulator to drive the hammer to strike the straight pipe, causing the solid crystals attached to the filter screen to be shaken off, thereby cleaning the filter screen, ensuring the effect of the next filtration, and not wasting human resources for cleaning.

[0015] (3) This drainage gas extraction device for natural gas extraction uses a blower to rotate the three-way ball valve to the impurity discharge pipe, and then turns on the blower to adsorb the solid impurities at the bottom of the straight pipe. The solid impurities are then discharged through the impurity discharge pipe, so that the spiral blades will not be interfered with by the solid impurities at the bottom, and the self-cleaning function is also achieved. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the overall appearance of the present invention; Figure 2 This is a schematic diagram of the overall cross-sectional three-dimensional structure of the present invention; Figure 3This is a three-dimensional structural diagram of some parts of the present invention; Figure 4 This is a three-dimensional structural diagram of some parts of the present invention; Figure 5 For the present invention Figure 4 A magnified structural diagram of A in the middle; Figure 6 This is a three-dimensional structural diagram of the striking component of the present invention; Figure 7 This is a three-dimensional structural diagram of the cleaning component of the present invention; Figure 8 For the present invention Figure 7 Enlarged structural diagram at point B.

[0017] In the diagram: 1. Housing; 2. Booster; 3. Drainage pipe; 4. Valve control assembly; 501. Hydraulic rod one; 502. Hydraulic pipe one; 503. Baffle; 504. Connecting rod; 505. Hydraulic rod two; 506. Slide groove one; 507. Cross-shaped fixing bracket; 508. Rotary connector; 509. Rotating shaft; 510. Filter screen hole; 511. Spiral blade; 512. Straight pipe; 601. Hydraulic pipe 2; 602. Hydraulic rod 3; 603. Fixing plate; 604. Slide groove 2; 605. Sliding rack; 606. Gear; 607. Limiter; 609. Spring; 610. Rotary accumulator; 611. Hammer head; 701. T-shaped tee pipe; 702. Explosion-proof tee ball valve; 703. Hydraulic pipe four; 704. Hydraulic rod five; 705. Explosion-proof tee ball valve switch; 706. Exhaust fan; 707. Hydraulic pipe three; 708. Hydraulic rod four; 709. Switch slot; 710. Exhaust fan switch; 8. Gate; 9. Lifting and compression plate; 10. Slide plate; 11. Float assembly; 12. Air intake pipe; 13. Drainage chamber; 14. Pressurization chamber; 15. Partition plate. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Example 1, please refer to Figures 1-5 A drainage gas extraction device for natural gas extraction, comprising: The housing 1 has a booster 2 fixedly connected to its top and an air inlet pipe 12 fixedly connected to its bottom. A drain pipe 3 is fixedly connected to the right side of the housing 1. A partition plate 15 is fixedly connected inside the housing 1 to separate the various functional areas inside the drainage and gas collection device. A drainage chamber 13 is provided below the partition plate 15. A booster chamber 14 is provided inside the housing 1. A float assembly 11 is fixedly connected inside the booster chamber 14. A valve control assembly 4 is provided inside the housing 1. A gate 8 is slidably connected inside the drainage chamber 13. When the water level causes the float to float, the float assembly 4 will drive the valve control assembly 11 to open the gate 8 of the drainage pipe 3, allowing the water in the drainage chamber 13 to be discharged. A lifting compression plate 9 is fixedly connected below the drainage chamber 13. The lifting compression plate 9 is made of waterproof material and will not be corroded or damaged during long-term liquid immersion. A sliding plate 10 is fixedly connected inside the housing 1 to make the lifting compression plate 9 move up and down more smoothly.

[0020] A hydraulic rod 501 is fixedly connected to the bottom of the slide plate 10. A hydraulic pipe 502 is connected to the top of the hydraulic rod 501. The hydraulic rod 501 is the main power hydraulic rod, controlling the pushing of all subsequent hydraulic rods. A hydraulic rod 505 is fixedly connected to the inner wall of the pressurization chamber 14. The hydraulic pipe 502 is connected to the hydraulic rod 505. A slide groove 506 is opened on the side of the hydraulic rod 501. A baffle 503 is slidably connected inside the slide groove 506. A connecting rod 504 is fixedly connected to the side of the baffle 503. The connecting rod 504 is connected to the hydraulic rod 505. The hydraulic rod 505 controls the raising and lowering of the baffle 503. A straight pipe 512 is fixedly connected to the left side of the box 1. The straight pipe 512 is made of high-pressure resistant and explosion-proof material, which can effectively prevent explosions. The dangers of natural gas in a sealed pipeline are addressed by a cross-shaped fixing bracket 507 fixedly connected inside the straight pipeline 512. The cross-shaped fixing bracket 507 provides a support point for the spiral blade 511 inside the pipeline. A rotating connector 508 is fixedly connected to the inner side of the cross-shaped fixing bracket 507. A rotating shaft 509 is rotatably connected to the inner side of the rotating connector 508. The spiral blade 511 is fixedly connected to the outer side of the rotating shaft 509. The rotating shaft 509 of the spiral blade 511 rotates through the rotating connector 508. A filter screen hole 510 is opened above the spiral blade 511. Multiple filter screen holes 510 are opened on the spiral blade 511. The multiple filter screen holes 510 are circular in shape and of the same size. The spiral blade 511 can rotate on the rotating connector 508.

[0021] During operation, natural gas enters through the intake pipe 12, and then the booster 2 pressurizes it, causing water vapor in the natural gas to form water droplets that collect at the bottom of the pressurization chamber 14. As more and more water accumulates, its weight increases, causing the lifting compression plate 9 to press down along the slide plate 10, flowing the water into the drainage chamber 13. When the weight of the water is less than the weight that the lifting compression plate 9 can bear, it bounces back to its original position. After multiple drainage cycles, when the drainage chamber 13 is full, the lifting compression plate 9 can no longer slide down to open, thus forming a water seal to prevent natural gas leakage. At this point, water accumulates at the bottom of the pressurization chamber 14, and the float assembly 11 rises due to the buoyancy of the water, causing the valve control assembly 4 to drive the gate 8 to open and discharge the water. In the pressurization chamber 14, because natural gas is lighter, it accumulates at the top. The rising and falling of the lifting compression plate 9 pushes the hydraulic rod 501, causing the liquid inside the hydraulic pipe 502 to be squeezed out. Hydraulic rod 505 is raised and lowered, causing baffle 503 to rise and fall within chute 506, controlling the inlet of the straight pipe 512. As baffle 503 rises, natural gas from pressurization chamber 14 enters the straight pipe 512 due to the pressure difference. The spiral blades 511 inside the straight pipe 512 rotate due to the incoming natural gas, filtering it through the filter mesh 510. The rotation of the spiral blades ensures sufficient contact with the natural gas, filtering out internal impurities. The straight pipe 512 is made of explosion-proof material, enabling the filtering of solid impurities during natural gas transportation. This ensures both transportation safety and purification of the natural gas. Baffle 503 also controls the amount of natural gas transported, further enhancing safety and ensuring stable operation of the device.

[0022] Example 2, please refer to Figures 1-6A hydraulic rod 3 602 is fixedly connected to the top of the straight pipe 512. A hydraulic pipe 2 601 is located above the straight pipe 512 and connects to the hydraulic rod 3 602. The hydraulic pipe 2 601 branches off from the hydraulic pipe 1 502. A sliding rack 605 is fixedly connected to the hydraulic rod 3 602. The rack 605 has three intervals in the middle, and the rest are normal continuous racks. The sliding rack 605 meshes with a gear 606. The three intervals on the sliding rack 605 are to release the pressure generated by the spring 609, allowing it to strike the straight pipe 512. A fixing plate 603 is fixedly connected to the top of the straight pipe 512. A sliding groove 2 604 is opened above the fixing plate 603, and a sliding rack 605 is slidably connected inside the sliding groove 2 604. 605 can move on the slide groove 604, so that the hydraulic rod 602 can push the sliding rack 605. The upper part of the straight pipe 512 is fixedly connected to the limit device 607. The limit device 607 can compress the spring 609 backward. The angle of the limit device 607 is the limit between the two partitions of the sliding rack 605. The spring 609 is fixedly connected below the limit device 607. The rotating accumulator 610 is fixedly connected below the spring 609. The angle of the limit device 607 is 170 degrees. The angle of the rotating accumulator 610 is 100 degrees. The gear 606 is fixedly connected to the upper part of the rotating accumulator 610 and can control the angle change of the rotating accumulator 610. The gear 606 is fixedly connected to the left side of the rotating accumulator 610. The hammer head 611 is fixedly connected to the lower part of the rotating accumulator 610.

[0023] In use, based on Embodiment 1, when the baffle 503 descends to block the inlet, a portion of the liquid inside hydraulic pipe 1 502 will be diverted to the interior of hydraulic pipe 2 601, flowing towards the interior of hydraulic rod 3 602, thereby pushing hydraulic rod 3 602. The push rod of hydraulic rod 3 602 is connected to sliding rack 605, enabling it to move sliding rack 605 along the slide groove 2 604 on fixed plate 603. Sliding rack 605 is engaged with one side of gear 606, while the other side of gear 606 is fixedly connected to rotary accumulator 610. Sliding rack 605 drives gear 606 to rotate, causing rotary accumulator 610 to move upward, compressing the upper spring 609. After being compressed to a certain extent, sliding rack 605 continues to slide and enters the empty tooth position. The unengaged rack of gear 606 will be affected by the upper... The compressed spring 609 is released, and the hammer 611 strikes the straight pipe 512 heavily, causing the crystallized blocks on the internal filter screen 510 to fall to the bottom of the straight pipe 512, thus completing one cleaning of the filter screen 510. The hydraulic rod 602 continues to push forward, causing the sliding rack 605 to continue moving and re-engage the gear 606, thus repeating this process. This design ensures that the filter screen 510 on the spiral blades 511 inside the straight pipe 512 is clean, preventing the next filtration from being affected by fixed impurities on the filter screen 510, which would lead to uncleaned natural gas passing through. It also avoids the need for frequent cleaning of the filter screen 510 by the staff, effectively ensuring the sealing of the straight pipe 512 and preventing natural gas leaks caused by improper operation by the staff, thus preventing dangerous incidents.

[0024] Example 3, please refer to Figures 1-8Based on Embodiments 1 and 2, a T-shaped tee pipe 701 is fixedly connected to the front of the straight pipe 512. An exhaust fan 706 is fixedly connected to the connection between the T-shaped tee pipe 701 and the straight pipe 512. The exhaust fan 706 can suck out solid impurities shaken down inside the straight pipe 512, eliminating the need for manual pipe disassembly for cleaning and ensuring the pipe's seal, preventing workers from coming into contact with hazardous natural gas. Above the exhaust fan 706 is a switch slot 709, inside which an exhaust fan switch 710 is slidably connected. Behind the exhaust fan switch 710 is a hydraulic rod 708, and behind the hydraulic rod 708 is a hydraulic pipe 707. The hydraulic pipe 707 branches off from the hydraulic pipe 601, and the hydraulic pipe 703 branches off from the hydraulic pipe 707. The hydraulic rod 708... 8 controls the exhaust fan 706, ensuring that the exhaust fan 706 only turns on when the pipeline is closed, thus avoiding resource waste. The T-shaped tee pipe 701 is internally equipped with an explosion-proof tee ball valve 702. The explosion-proof tee ball valve 702 has three holes, allowing the straight pipe 512 to be connected to different pipes by rotation, thereby achieving different functions. An explosion-proof tee ball valve switch 705 is fixedly connected above the explosion-proof tee ball valve 702. A hydraulic rod 704 is fixedly connected above the explosion-proof tee ball valve switch 705. A hydraulic pipe 703 is fixedly connected behind the hydraulic rod 704. The rotation of the explosion-proof tee ball valve 702 is controlled by the hydraulic rod 708. When the baffle 503 descends, the power transmitted through the hydraulic rod 501 causes the hydraulic rod 708 to push the explosion-proof tee ball valve switch 705, thereby causing the explosion-proof tee ball valve 702 to rotate synchronously.

[0025] In use, based on Embodiments 1 and 2, a portion of the liquid in hydraulic pipe 2 601 is diverted to hydraulic pipe 3 707, causing hydraulic rod 4 708, fixed to the exhaust fan 706, to push the exhaust fan switch 710, which is fixedly connected to it. This opens the exhaust fan 706, sucking away residual solid impurities at the bottom of the straight pipe 512. A portion of the liquid inside hydraulic pipe 3 707 is diverted to hydraulic pipe 4 703, and the other end of hydraulic pipe 4 703 is connected to hydraulic rod 5 704. Hydraulic rod 5 704 is fixedly connected to explosion-proof three-way ball valve switch 705, and the base of explosion-proof three-way ball valve switch 705 is fixedly connected to T-shaped three-way pipe 701. T-shaped three-way pipe 701 is internally equipped with… The explosion-proof three-way ball valve 702 is fixedly connected to the explosion-proof three-way ball valve switch 705 above it. The hydraulic rod 704 pushes the explosion-proof three-way ball valve switch 705, causing the explosion-proof three-way ball valve 702 to rotate and connect to another pipeline, thereby allowing solid impurities to be discharged from the other pipeline. The hydraulic rod 704 resets, driving the explosion-proof three-way ball valve switch 705 to reset, allowing the pipeline to operate normally and natural gas to be discharged. This design eliminates the need for workers to clean the solid impurities accumulated inside the straight pipeline 512, ensuring the pipeline's seal and achieving self-cleaning. It also avoids the safety hazards caused by workers disassembling the straight pipeline 512 and extends the working time of the drainage and gas sampling device, avoiding wasted time.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A drainage gas extraction device for natural gas extraction, characterized in that, include; The box has a booster fixedly connected to the top, an air intake pipe fixedly connected to the bottom of the booster, a drain pipe fixedly connected to the right side of the box, a partition plate fixedly connected inside the box, and a drain compartment opened below the partition plate. A hydraulic rod is fixedly connected to the bottom of the slide plate, and a hydraulic pipe is connected to the top of the hydraulic rod. A hydraulic rod is fixedly connected to the inner wall of the pressurization chamber. The hydraulic pipe is connected to the hydraulic rod. A groove is provided on the side of the hydraulic rod. A baffle is slidably connected inside the groove. A connecting rod is fixedly connected to the side of the baffle. A straight pipe is fixedly connected to the left side of the box. A cross-shaped fixing bracket is fixedly connected inside the straight pipe. A rotating connector is fixedly connected to the inner side of the cross-shaped fixing bracket. A rotating shaft is rotatably connected to the inner side of the rotating connector. A spiral blade is fixedly connected to the outer side of the rotating shaft. A filter screen is provided above the spiral blade.

2. A drainage gas extraction device for natural gas extraction according to claim 1, characterized in that: The box body has a pressurization chamber inside, a float plate assembly is fixedly connected inside the pressurization chamber, a valve control assembly is installed inside the box body, a gate is slidably connected inside the drainage chamber, a lifting compression plate is fixedly connected below the drainage chamber, and a sliding plate is fixedly connected inside the box body.

3. A drainage gas extraction device for natural gas extraction according to claim 1, characterized in that: The spiral blade has multiple filter holes, which are circular in shape and of the same size. The spiral blade can rotate on the rotating connector.

4. A drainage gas extraction device for natural gas extraction according to claim 1, characterized in that: A hydraulic rod three is fixedly connected to the top of the straight pipe. A hydraulic pipe two is located above the straight pipe and is connected to the hydraulic rod three. A fixing plate is fixedly connected to the top of the straight pipe. A sliding groove two is opened above the fixing plate. A sliding rack is slidably connected inside the sliding groove two. A limiter is fixedly connected to the top of the straight pipe. A spring is fixedly connected below the limiter. A rotary accumulator is fixedly connected below the spring. A gear is fixedly connected to the left side of the rotary accumulator. A hammer is fixedly connected to the bottom of the rotary accumulator.

5. A drainage gas extraction device for natural gas extraction according to claim 4, characterized in that: The second hydraulic pipe branches off from the first hydraulic pipe. The sliding rack is fixedly connected to the third hydraulic rod. The sliding rack has three intervals in the middle and the rest are normal continuous racks. The sliding rack meshes with the gear.

6. A drainage gas extraction device for natural gas extraction according to claim 4, characterized in that: The limit switch has an angle of 170 degrees, the rotary accumulator has an angle of 100 degrees, and the gear is fixedly connected to the top of the rotary accumulator, which can control the angle change of the rotary accumulator.

7. A drainage gas extraction device for natural gas extraction according to claim 1, characterized in that: A T-shaped tee pipe is fixedly connected to the front of the straight pipe. An exhaust fan is fixedly connected to the connection between the T-shaped tee pipe and the straight pipe. A switch slot is located above the exhaust fan. An exhaust fan switch is slidably connected inside the switch slot. A hydraulic rod four is connected to the rear of the exhaust fan switch. A hydraulic pipe three is fixedly connected to the rear of the hydraulic rod four.

8. A drainage gas extraction device for natural gas extraction according to claim 7, characterized in that: The T-shaped three-way pipe is equipped with an explosion-proof three-way ball valve. An explosion-proof three-way ball valve switch is fixedly connected above the explosion-proof three-way ball valve. A hydraulic rod five is fixedly connected above the explosion-proof three-way ball valve switch. A hydraulic pipe four is fixedly connected behind the hydraulic rod five.

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